[PATCH] Support for multiple RSL connections with ABIS/ipaccess (BTS side)

In order to support multiple TRX, multiple RSL connections can be establised. e1inp_ipa_bts_rsl_connect() requires an additional parameter to set the TRX number. The code was successfully tested with osmobts-trx and UmTRX with two transceivers. The user of e1inp_ipa_bts_rsl_connect() and e1inp_line_bind_ops() (which is osmo-bts) must be upgraded after applying the patch. --- include/osmocom/abis/e1_input.h | 3 ++- src/input/ipaccess.c | 16 ++++++++++------ tests/e1inp_ipa_bts_test.c | 2 +- 3 files changed, 13 insertions(+), 8 deletions(-) diff --git a/include/osmocom/abis/e1_input.h b/include/osmocom/abis/e1_input.h index 0abf0b8..2a9890c 100644 --- a/include/osmocom/abis/e1_input.h +++ b/include/osmocom/abis/e1_input.h @@ -258,7 +258,8 @@ struct subch_mux *e1inp_get_mux(uint8_t e1_nr, uint8_t ts_nr); /* on an IPA BTS, the BTS needs to establish the RSL connection much * later than the OML connection. */ int e1inp_ipa_bts_rsl_connect(struct e1inp_line *line, - const char *rem_addr, uint16_t rem_port); + const char *rem_addr, uint16_t rem_port, + uint8_t trx_id); void e1inp_sign_link_destroy(struct e1inp_sign_link *link); int e1inp_line_update(struct e1inp_line *line); diff --git a/src/input/ipaccess.c b/src/input/ipaccess.c index 9722b2f..86ddd3a 100644 --- a/src/input/ipaccess.c +++ b/src/input/ipaccess.c @@ -838,6 +838,7 @@ static int ipaccess_bts_read_cb(struct ipa_client_conn *link, struct msgb *msg) struct e1inp_sign_link *sign_link; uint8_t *data = msgb_l2(msg); int len = msgb_l2len(msg); + struct ipaccess_unit *unit_data; LOGP(DLINP, LOGL_NOTICE, "received ID get\n"); if (!link->line->ops->sign_link_up) { @@ -847,7 +848,9 @@ static int ipaccess_bts_read_cb(struct ipa_client_conn *link, struct msgb *msg) ret = -EINVAL; goto err; } - rmsg = ipa_bts_id_resp(link->line->ops->cfg.ipa.dev, + unit_data = (struct ipaccess_unit *) + link->line->ops->cfg.ipa.dev; + rmsg = ipa_bts_id_resp(&unit_data[link->ofd->priv_nr-1], data + 1, len - 1); ret = ipaccess_send(link->ofd->fd, rmsg->data, rmsg->len); @@ -869,7 +872,7 @@ static int ipaccess_bts_read_cb(struct ipa_client_conn *link, struct msgb *msg) } msgb_free(rmsg); - sign_link = link->line->ops->sign_link_up(msg, + sign_link = link->line->ops->sign_link_up(unit_data, link->line, link->ofd->priv_nr); if (sign_link == NULL) { @@ -885,7 +888,7 @@ static int ipaccess_bts_read_cb(struct ipa_client_conn *link, struct msgb *msg) } else if (link->port == IPA_TCP_PORT_OML) e1i_ts = &link->line->ts[0]; else if (link->port == IPA_TCP_PORT_RSL) - e1i_ts = &link->line->ts[1]; + e1i_ts = &link->line->ts[link->ofd->priv_nr-1]; OSMO_ASSERT(e1i_ts != NULL); @@ -1016,13 +1019,14 @@ static int ipaccess_line_update(struct e1inp_line *line) } int e1inp_ipa_bts_rsl_connect(struct e1inp_line *line, - const char *rem_addr, uint16_t rem_port) + const char *rem_addr, uint16_t rem_port, + uint8_t trx_id) { struct ipa_client_conn *rsl_link; rsl_link = ipa_client_conn_create(tall_ipa_ctx, - &line->ts[E1INP_SIGN_RSL-1], - E1INP_SIGN_RSL, + &line->ts[E1INP_SIGN_RSL+trx_id-1], + E1INP_SIGN_RSL+trx_id, rem_addr, rem_port, ipaccess_bts_updown_cb, ipaccess_bts_read_cb, diff --git a/tests/e1inp_ipa_bts_test.c b/tests/e1inp_ipa_bts_test.c index 02a4cb3..a43dba3 100644 --- a/tests/e1inp_ipa_bts_test.c +++ b/tests/e1inp_ipa_bts_test.c @@ -70,7 +70,7 @@ sign_link_up(void *unit, struct e1inp_line *line, enum e1inp_sign_type type) /* Now we can send OML messages to the BSC. */ bts_state = BTS_TEST_OML_SIGN_LINK_UP; } - e1inp_ipa_bts_rsl_connect(line, "127.0.0.1", IPA_TCP_PORT_RSL); + e1inp_ipa_bts_rsl_connect(line, "127.0.0.1", IPA_TCP_PORT_RSL, 0); break; case E1INP_SIGN_RSL: LOGP(DBTSTEST, LOGL_NOTICE, "RSL link up request received.\n"); -- 1.8.1.5 --------------030007020209040104000503 Content-Type: text/x-diff; name="osmo-bts_Support-for-multiple-RSL-connections.patch" Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename="osmo-bts_Support-for-multiple-RSL-connections.patch"